TCP (Transmission Control Protocol) is a common and reliable transmission protocol on the Internet. TCP was introduced in the 70s by Stanford University for US Defense to establish connectivity between distributed systems to maintain a backup of defense information. At the time, TCP was introduced to communicate amongst a selected set of devices for a smaller dataset over shorter distances. As the Internet evolved, however, the number of applications and users, and the types of data accessed and stored also evolved. The original intent of TCP was to communicate data in the form of text across computers; today’s data transfer is more complex including high pixel images, audio files, and video delivery.
Source: DevOps Journal